[Bug 263824] genet(4): Driver interface may overwrite memory in a consecutive memory copy operations when parsing TX packet

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 07 May 2022 21:45:39 UTC

Mike Karels <karels@freebsd.org> changed:

           What    |Removed                     |Added
             Status|Open                        |In Progress

--- Comment #3 from Mike Karels <karels@freebsd.org> ---
Had you set the value of the sysctl hw.genet.tx_hdr_min to 0?  I couldn't drive
the code through the block with the bug without doing that.  Even with that, I
could only do it with a random failure in M_PREPEND.  However, I tested your
fix successfully and demonstrated the problem without it.

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